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See also:FRANZ See also:JOSEPH See also:GALL (1758-1828)
, anatomist, physiologist, and founder of See also:phrenology (q.v.), was See also:born'at Tiefenbrunn near See also:Pforzheim, See also:Baden, on the 9th of See also: In March 18o5 he finally See also:left Vienna in See also:company with his friend and See also:associate J . C . See also:Spurzheim, and made a tour through See also:Germany, in the course of which he lectured in See also:Berlin, See also:Dresden, See also:Magdeburg and several of the university towns . His expositions, which he knew how to make popular and attractive, were much cohesion, and little has been added to what he ascertained on the question of transverse strains and the strength of beams, first brought by him within the See also:scope of mechanical theory . In his Discorso intorno alle core the stanno su l'acqua, published in 1612, he used the principle of virtual velocities to demonstrate the more important theorems of See also:hydrostatics, deducing from it the See also:equilibrium of fluid in a See also:siphon, and proved against the Aristotelians that the floating of solid bodies in a liquid depends not upon their form, but upon their specific gravities relative to such liquid . In See also:order to form an adequate estimate of the stride made by Galileo in natural See also:philosophy, it would be necessary to enumerate the confused and erroneous opinions prevailing on all such subjects in his See also:time . His best eulogium, it hasbeen truly said, consists in the fallacies which he exposed . The scholastic distinctions between corruptible and incorruptible substances, between See also:absolute gravity and absolute levity, between natural and violent motions, if they did not wholly disappear from scientific phraseology, ceased thenceforward to hold the See also:place of See also:honour in the controversies of the learned . Discarding these obscure and misleading notions, Galileo taught that gravity and levity are relative terms, and that all bodies are heavy, even those which, like the See also:air, are invisible; that See also:motion is the result of force, instantaneous or continuous; that See also:weight is a continuous force, attracting towards the centre of the See also:earth; that, in a vacuum, all bodies would fall with equal velocities; that the " inertia of See also:matter " implies the continuance of motion, as well as the permanence of See also:rest; and that the substance of the heavenly bodies is equally " corruptible " with that of the earth . These See also:simple elementary ideas were eminently capable of development and investigation, and were not only true but the prelude to further truth; while those they superseded defied inquiry by their vagueness and obscurity . Galileo was a See also:man born in due time . He was See also:superior to his contemporaries, but not isolated amongst them . He represented and intensified-a growing tendency of the See also:age in which he lived . It was beginning to be suspected that from See also:Aristotle an See also:appeal See also:lay to nature, and some were found who no longer treated the ipse dixit of the Stagirite as the final authority in matters of See also:science . A vigorous but ineffectual warfare had already been waged against the See also:blind traditions of the See also:schools by See also:Ramus and Telesius, by Patricius and See also:Campanella, and the revolution which Galileo completed had been prepared by his predecessors . Nevertheless, the task which he so effectually accomplished demanded the highest and rarest quality of See also:genius . He struck out for himself the happy See also:middle path between the a priori and the empirical systems, and exemplified with brilliant success the method by which experimental science has wrested from nature so many of her secrets . His mind was eminently See also:practical . He concerned himself above all with what See also:fell within the range of exact inquiry, and left to others the larger but less fruitful speculations which can never be brought to the See also:direct test of experiment . Thus, while far-reaching but hasty generalizations have had their See also:day and been forgotten, his work has proved permanent, because he made sure of its See also:foundations . His keen See also:intuition of truth, his vigour and yet sobriety of See also:argument, his fertility of See also:illustration and acuteness of See also:sarcasm, made him irresistible to his antagonists; and the evanescent triumphs of scornful controversy have given place to the sedate See also:applause of a See also:long-lived posterity . The first See also:complete edition of Galileo's writings was published at See also:Florence (1842–1856), in 16 8vo vols., under the supervision of Signor Eugenio Alberi . Besides the See also:works already enumerated, it contained the Sermones de mote, gravium composed at See also:Pisa between 1589 and 1591; his letters to his See also:friends, with many of their replies, as well as several of the essays of his scientific opponents; his laudatory comments on the Orlando Furioso, and depreciatory notes on the Gerusalemme Liberata, some stanzas and sonnets of no See also:great merit, together with the See also:sketch of a See also:comedy; finally, a reprint of Viviani's See also:Life, with valuable notes and corrections . The See also:original documents from the archives of the See also:Inquisition, See also:relating to the events of 1616 and 1633, recovered from See also:Paris in 1846 by the efforts of See also:Count See also:Rossi, and now in the Vatican Library, were to a limited extent made public by See also:Monsignor See also:Marino-See also:Marini in 185o, and more unreservedly by M . See also:Henri de l'Epinois, in an See also:essay entitled See also:August 1828 . |
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